22
22
Nov 5, 2014
11/14
by
Funny or Die
movies
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Make the sale or do the Honorable thing.
Topics: Funny or Die Video Archive, Asheville, Funny, NC, Random, Sales Pitch, Salesman, Short, Suicide,...
The objective of the program was to assess the feasibility of rapid excavation of hard rock by means of continuous fluid jets produced by pressures in the range of 20,000 to 80,000 pounds per square inch. A total of eight rock types were selected and appropriate quantities of test specimens were procured. Cutting test data was analyzed to determine optimum settings of jet parameters within experimental ranges that result in rapid and efficient excavation of rock. Power requirements and...
Topics: DTIC Archive, Chadwick, Ray F, BENDIX RESEARCH LABS SOUTHFIELD MI, *ROCK, *UNDERGROUND STRUCTURES,...
Stress-strain behavior in tension and compression at various pressures, Pressure-Volume-Temperature (PVT) relations, and the pressure dependency of transitional behavior, by dielectric technique, of Phase I and Phase II poly(vinylidene fluoride) (PVDF) have been determined. The result obtained are used in analyzing the complex behavior of piezoelectric and pyroelectric properties of the material at high pressures and temperatures. The Young's modulus (E) of Phase II PVDF Increases, at room...
Topics: DTIC Archive, Pae,K D, RUTGERS - THE STATE UNIV PISCATAWAY NJ HIGH PRESSURE MATERIALS RESEARCH LAB,...
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1.0
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Topics: manualzz, manuals, Makita HW 151 manual, HW 151 pdf download, HW 151 Technical information, Makita...
43
43
Apr 21, 2017
04/17
by
Impact Journals
texts
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Diesel engines are one of the most important prime movers for mobility and reorganized power generation and are categorized by heterogeneous combustion. Heterogeneous combustion leads to formation of soot and NOx in the combustion chamber. The gasoline injection system, which is the heart of an engine, plays a pivotal role in the fuel–air mixing processes inside the combustion chamber. Fuel atomization activities are mainly contingent on constraints such as nozzle diameter, injection...
Topics: High Pressure Spray Chamber, Fuel Injector Holder, Flow Visualization Technique, Combustion...
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1.0
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4 v. 24 cm
Topic: High pressure (Science) -- Research
A high pressure and temperature combustion chamber was designed to compare the ignition properties of different fuels, including conventional F76 diesel and hydrotreated renewable diesel (HRD), derived from algae. Conditions were selected to capture the operating conditions within a large number of Navy systems, testing at a range of temperatures from 8001340 F and pressures as high as 20 atm. Three Navy-relevant injectors were procured for the testing as well as a commercial injector made by...
Topics: F-76, HRD, High-pressure, Ignition delay, Diesel injectors, Alternative fuels
320
320
Jul 8, 2009
07/09
by
NASA LaRC Office of Education
movies
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NASA Why? Files segment explaining the anatomy of a hurricane, and how it forms.
Topics: High Pressure, Low Pressure, Dr. Stephen Lyons, Tropical Storm, Tropics, Trade Winds, Ocean, Eye
Source: http://nasa.ibiblio.org/details.php?videoid=6225&start=100&subject=Science
A high pressure liquid cell interferometer to measure the variation of refractive index of liquids with pressure to 14 kbars is described. The amount of liquid needed is only 3 c.c. Interferometric measurements on a number of liquids, at high pressure show (i) first experimental proof that the Eulerian frame-indifferent analogue strain E is a more useful strain measure than the Lagrangian strain, (ii) Keane's equation of state best describes each and all liquids, studied, (iii) change in...
Topics: DTIC Archive, Vedam,K, PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB, *OPTICAL...
Recent investigations have shown that unoriented phase I poly(vinylidene fluoride (PVF2) films can be produced by pressure quenching. The poling field dependence of the pyroelectric coefficient, P sub y, the piezoelectric coefficients d sub p, d sub 31 and e sub 31 and the dielectric response is investigated for poling fields up to E sub p = 2.75 million V/cm. These quantities exhibit a plateau region where the initial rapid increase with increasing E sub p decreases. This behavior is similar...
Topics: DTIC Archive, Scheinbeim,J I, RUTGERS - THE STATE UNIV PISCATAWAY NJ HIGH PRESSURE MATERIALS...
Recently there was a flurry of activities in studying the effects of phase transitions in the Earth's mantle. From petrological and geophysical considerations, phase-transitions would also play an important role in venusian dynamics. The basic differences between the two planets are the surface boundary conditions, both thermally and mechanically. In this vein we have studied time-dependent mantle convection with multiple phase transitions and depth-dependent thermal expansivity (alpha is...
Topics: NASA Technical Reports Server (NTRS), CONVECTION, EARTH MANTLE, GEOPHYSICS, PETROLOGY, PHASE...
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xiii, 462 pages : 24 cm
Topics: Biopolymere, Analyse, Chromatopgraphie, Biopolymères -- Séparation, Électrophorèse,...
In a previous report to the Office of Naval Research, several thermal and thermomechanical aspects of tribology pertinent to rolling/sliding contacts were described in some detail. In this final report, there is presented an account of related work on surface chemical reactions occurring at high pressures. A model lubricant system - lauric acid in dodecane - in contact with a simulated bearing surface - thin films of vacuum-deposited iron - was employed in these studies. Fourier transform...
Topics: DTIC Archive, Brasch,J w, BATTELLE COLUMBUS LABS OH, *ROLLER BEARINGS, *FRICTION, *LUBRICATION,...
The objectives of this investigation were (1) to develop elastomeric seals for 5200 psi air systems wherein the compressors are lubricated with either petroleum-base fluids or with phosphate-ester fluids, and (2) to prepare a specification for these seals. A Viton B stock (377-112) was previously developed and shown by performance tests to be very suitable for this purpose. However, O-rings of this stock corroded steel and bronze under humid conditions. This problem was solved by washing the...
Topics: DTIC Archive, Ford, R D, MARE ISLAND NAVAL SHIPYARD VALLEJO CA RUBBER LAB, *PRESSURE SEALS, METALS,...
Creep experiments on fine-grained water and ammonia-water ices have been performed at one atmosphere and high confining pressure in order to develop constitutive relationships necessary to model tectonic processes and interpret surface features of icy moons of the outer solar system. The present series of experiments explores the effects of temperature, strain rate, grain size, and melt fraction on creep strength. In general, creep strength decreases with increasing temperature, decreasing...
Topics: NASA Technical Reports Server (NTRS), AMMONIA, AQUEOUS SOLUTIONS, CREEP PROPERTIES, CREEP STRENGTH,...
Steady and unsteady combustion of liquid fuel droplets under rocket engine conditions was analyzed. Emphasis was placed on combustion at elevated pressures and temperatures. The results and their technical application to the design of liquid fueled rocket engines and the determination of combustion instability characteristics of these engines were summarized.
Topics: NASA Technical Reports Server (NTRS), COMBUSTION STABILITY, DROPS (LIQUIDS), LIQUID ROCKET...
An experimental Single Cylinder Test Engine Program is conducted to confirm the analytically projected performance of a two-stroke cycle diesel engine for aircraft applications. The test engine delivered 78kW indicated power from 1007cc displacement, operating at 3500 RPM on Schnuerle loop scavenged two-stroke cycle. Testing confirms the ability of a proposed 4-cylinder version of such an engine to reach the target power at altitude, in a highly turbocharged configuration. The experimental...
Topics: NASA Technical Reports Server (NTRS), AIRCRAFT ENGINES, DIESEL ENGINES, FUEL INJECTION, HIGH...
Topics: tbe, scientific, patent, electric, steam, post, munn, letters, post office, device, express money,...
Topics: scientific, patent, steam, tbe, tion, dickerson, apparatus, american, scientific american, device,...
Topics: scientific, powder, tion, pressure, smokeless, american, exposition, acetylene, scientific...
Topics: patent, scientific, steam, planing, portion, claim, inventors, calking, patent office, tion,...
Topics: patented, scientific, steam, munn, cylinder, center, tion, patent, scientific american, patents,...
177
177
Jul 21, 2010
07/10
by
Ferluga, S.; Hack, M
texts
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The preliminary results of the study of several high resolution spectrograms (lambda 3500 - lambda 7000 A), obtained at the Haute Provence Observatory (OHP) in France, at different epochs before, during and after the eclipse are reported. Some of these spectrograms are compared with corresponding IUE high resolution observations, in order to study the effects of the intrinsic UV activity, towards the longer wavelengths.
Topics: CLOSED CYCLES, JOSEPHSON JUNCTIONS, LIQUID HELIUM, MAGNETOMETERS, REFRIGERATORS, CRYOGENIC COOLING,...
270
270
Jun 3, 2011
06/11
by
Dempsey, Paula J.; Certo, Joseph M.; Morales, Wilfred
texts
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Advances in material development and processing have led to the introduction of ceramic hybrid bearings for many applications. The introduction of silicon nitride hybrid bearings into the high pressure oxidizer turbopump, on the space shuttle main engine, led NASA to solve a highly persistent and troublesome bearing problem. Hybrid bearings consist of ceramic balls and steel races. The majority of hybrid bearings utilize Si3N4 balls. The aerospace industry is currently studying the use of...
Topics: METEORITES, CHONDRITES, HIGH PRESSURE, MICROSTRUCTURE, POLYCRYSTALS, CRYSTALLIZATION, MINERALOGY,...
http://uf.catalog.fcla.edu/uf.jsp?st=UF028818701&ix=pm&I=0&V=D&pm=1
Topics: Research, Enkephalin, Leucine, Opioid Peptides, Models, Molecular, Immunoassay, Enzyme-Linked...
589
589
Jul 12, 2010
07/10
by
NON
texts
eye 589
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The technology issues involved in power subsystem automation and the reasonable objectives to be sought in such a program were discussed. The complexities, uncertainties, and alternatives of power subsystem automation, along with the advantages from both an economic and a technological perspective were considered. Whereas most spacecraft power subsystems now use certain automated functions, the idea of complete autonomy for long periods of time is almost inconceivable. Thus, it seems prudent...
Topics: CRACK PROPAGATION, METHANE, STRAIN RATE, FATIGUE (MATERIALS), HIGH STRENGTH STEELS, PIPELINES,...
247
247
May 21, 2011
05/11
by
Lo, Hs
texts
eye 247
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No Abstract Available
Topics: NOZZLES, SUPERSONIC, THEORIES - FLOW, SUPERSONIC, NOZZLES, HIGH-PRESSURE
170
170
Jul 12, 2010
07/10
by
Schofield, B. L
texts
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Three separate Air Force Flight Test Center (AFFTC) tests were conducted in 1980 and 1981 on two models of the peripheral vision horizon displays (PVHD) (Malcolm Horizon). A fixed base simulator test was conducted with twenty test pilot subjects using the Flight Simulator Demonstration Model which incorporated a Helium Neon laser as the light bar medium. Two separate flight tests were conducted by the Test Pilot School classes 80A and 80B in a Twin Otter commuter aircraft using the Stage A...
Topics: AUXILIARY PROPULSION, HIGH PRESSURE, THRUST CHAMBERS, TRADEOFFS, DESIGN ANALYSIS, ELECTRIC SPARKS,...
610
610
Jul 12, 2010
07/10
by
NON
texts
eye 610
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Scientific and administrative activities are summarized. The status of the NASA-Ames vertical gun is reported. The organization and role of NASA's Research and Analysis Program in space and Earth sciences are described.
Topics: ACEE PROGRAM, TURBINE BLADES, VANES, AIRCRAFT ENGINES, DESIGN ANALYSIS, ENERGY CONVERSION...
323
323
Jul 21, 2010
07/10
by
Aramayo, G. A.; Clark, K. L.; Kincaid, J. H.; Lyons, J. T.; Pearsn, C. M
texts
eye 323
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No Abstract Available
Topics: COMPONENT RELIABILITY, POLYTROPIC PROCESSES, STRUCTURAL MEMBERS, COMPRESSORS, HIGH PRESSURE,...
Topics: scientific, american, patent, adapted, dynamite, device, munn, steam, scientific american, ships,...
182
182
Jun 3, 2011
06/11
by
Hunter, Steve L.; Dischinger, Charles; Thomas, Robert E.; Babai, Maji
texts
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The application of high-level 3D simulation software to the design phase of colossal mandrel tooling for composite aerospace fuel tanks was accomplished to discover and resolve safety and human engineering problems. The analyses were conducted to determine safety, ergonomic and human engineering aspects of the disassembly process of the fuel tank composite shell mandrel. Three-dimensional graphics high-level software, incorporating various ergonomic analysis algorithms, was utilized to...
Topics: CERAMICS, FAILURE MODES, OXIDIZERS, HYBRID COMPOSITES, TURBINE PUMPS, DAMAGE, TRANSMISSIONS...
349
349
May 23, 2011
05/11
by
Ferraro, Ellen J
texts
eye 349
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This dissertation presents an analysis of airborne altimetry measurements taken over the Greenland ice sheet with the 13.9 GHz Advanced Application Flight Experiment (AAFE) pulse compression radar altimeter. This Ku-band instrument was refurbished in 1990 by the Microwave Remote Sensing Laboratory at the University of Massachusetts to obtain high-resolution altitude measurements and to improve the tracking, speed, storage and display capabilities of the radar. In 1991 and 1993, the AAFE...
Topics: COMMUNICATION SATELLITES, PROPELLANTS, FUEL INJECTION, TEMPERATURE CONTROL, REYNOLDS NUMBER,...
5
5.0
May 21, 2020
05/20
by
Lunn, George, 1950-
texts
eye 5
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4 volumes : 26 cm
Topics: Chromatographie en phase liquide à hautes performances, Médicaments -- Analyse, Chimie...
855
855
Jun 20, 2010
06/10
by
Morris, E. E
texts
eye 855
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Advantages of and design requirements for a load-bearing metal shell with an overwrapped glass-filament shell for high-pressure-fluid storage at 75 to -423 deg F were investigated analytically and experimentally. Proper design permits utilization of the maximum load-bearing capabilities of both shells and makes possible tanks of significantly lighter weight than the best cylindrical and spherical homogeneous metal pressure vessels. Glass-fiber-reinforced metal tanks were fabricated and tested;...
Topics: CRYOGENIC FLUID STORAGE, LOADS (FORCES), MATERIALS TESTS, PRESSURE VESSELS, REINFORCING FIBERS,...
C304 Lab News 05 25 62
Topics: sandia, serf, tion, reactor, radiation, laboratory, nuclear, albuquerque, ment, sandia corporation,...
Topics: scientific, steam, patent, acid, iron, improved, core, american, scientific american, carbonic,...
257
257
Jun 21, 2010
06/10
by
Henson, J. R.; Price, C. R.; Saldana, R. L
texts
eye 257
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Lunar module navigation systems accuracies for powered descent, ascent, and abort trajectories
Topics: ENGINEERING DRAWINGS, EQUIPMENT SPECIFICATIONS, GAS VALVES, HIGH PRESSURE, HIGH TEMPERATURE TESTS,...
143
143
May 27, 2011
05/11
by
Loogan, J. A.; Hollandsworth, S. M.; Bodeker, G. E.; Claude, H.; DeMuer, D.; Kerr, J. B.; Tarasick, D. W.; Oltmans, S. J.; Johnson, B.; Schmidlin, F.; Staehelin, J.; Megretskaia, I. A.; Viatte, P., et al; Miller, A. J.; Tiao, G. C.; Choi, D.; Zhang, L.; Bishop, L.; Stolarski, R.; Labow, G. J.
texts
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We present the results of two independent analyses of ozonesonde measurements of the vertical profile of ozone. For most of the ozonesonde stations we use data that were recently reprocessed and reevaluated to improve their quality and internal consistency. The two analyses give similar results for trends in ozone. We attribute differences in results primarily to differences in data selection criteria and in utilization of data correction factors, rather than in statistical trend models. We...
Topics: DELTA 3 LAUNCH VEHICLE, HIGH PRESSURE, COST EFFECTIVENESS, CRYOGENICS, HELIUM, LIQUID HYDROGEN,...
1
1.0
Jan 11, 2021
01/21
by
Daniel Brandenborg (Sidenius)
data
eye 1
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i made this cap for my hpa Ninja rig when i was attending to a game that required a lockcap enjoy :D
Topics: thingiverse, Sport & Outdoors, stl, regulator, high_pressure, airsoft_accesories, airsoft, hpa
A perturbation technique which is particularly well suited for high pressures is used to calculate thermodynamic properties for a simple liquid whose molecules interact via a Buckingham (exp-6) potential. There is good agreement between computations and experiments for moderate temperature isotherms for liquid nitrogen. A calculation of the shock Hugoniot of liquid nitrogen exhibits excellent agreement with experimental data. (Author)
Topics: DTIC Archive, Jones,Hermenzo D, NAVAL SURFACE WEAPONS CENTER SILVER SPRING MD, *PERTURBATION...
Reaction studies of elemental fluorine with organic molecules has lead to an understanding of mechanisms of the addition of molecular fluorine to unsaturated carbon-carbon bonds. The sensitivity of the activation energy of molecular fluorine to various molecular properties has been explored through extensive studies of closely related hydrocarbons. The effect of heteroatoms in a variety of hydrocarbons has also been explored. The studies of molecular fluorine reactions with inorganic fluorides...
Topics: DTIC Archive, Margrave, John L, RICE UNIV HOUSTON TX DEPT OF CHEMISTRY, *REACTION KINETICS,...
Orthochloronitrobenzene (OCNB) is a trace contaminant in Otto Fuel II (OFII), a nitrated ester used as a torpedo propellant by the U.S. Navy. In a published study, OCNB has been reported to produce multiple life tumors in male and female rats. The quantification of OCNB in OFII was performed by high pressure liquid chromatography. The OFII was found to contain 0.00165% OCNB and a distillate of OFII was found to contain 0.009% OCNB. It was estimated that over a 12 month inhalation exposure to...
Topics: DTIC Archive, Einhaus, R. L., CALIFORNIA UNIV DAYTON OH, *HIGH PRESSURE, *LIQUID CHROMATOGRAPHY,...
This research was to investigate the micromechanics of flow and failure of rocks and concrete at moderate to very high pressures. The theoretical work was to evaluate microcrack initiation under overall compression, interaction between cracks, and the final failure mode of materials. A testing facility was established for evaluating failure modes of brittle solids. Keywords: Micromechanical modeling; Experiments; Brittle-Ductile transformation.
Topics: DTIC Archive, Nemat-Nasser,S, NORTHWESTERN UNIV EVANSTON IL, *CONCRETE, *DUCTILE BRITTLE...
A mathematical model to simulate the low and high pressure crystal growth processes has been developed. The model accounts for both the melt and gas flows induced by buoyancy and capillary forces and by crystal and crucible rotations, radiation heat transfer from the melt and crystal surfaces, and the effect of the magnetic field. An efficient numerical scheme based on multizone adaptive grid generation and curvilinear finite volume flux discretization has been implemented to predict the...
Topics: DTIC Archive, Prasad, V., STATE UNIV OF NEW YORK AT STONY BROOK, *HIGH PRESSURE, *CRYSTAL GROWTH,...
The objective of the current work is to experimentally characterize the flowfield associated with an uni-element shear coaxial injector burning liquid oxygen/gaseous hydrogen (LOX/GH2) propellants. These experiments were carried out in an optically-accessible rocket chamber operating at a high pressure (approximately 400 psia). Quantitative measurements of drop size and velocity were obtained along with qualitative measurements of the disintegrating jet.
Topics: NASA Technical Reports Server (NTRS), CHARACTERIZATION, COMPUTATIONAL FLUID DYNAMICS, FLOW...
The combustion and evaporation of liquid fuels at high pressures were investigated. Particular emphasis was placed on conditions where the liquid surface approaches the thermodynamic critical point during combustion. The influence of transient effects on a burning liquid fuel was also investigated through both analysis and measurements of the response of liquid monopropellant combustion to imposed pressure oscillations. Work was divided into four phases (1) Droplet combustion at high pressures,...
Topics: NASA Technical Reports Server (NTRS), FUEL COMBUSTION, HIGH PRESSURE, LIQUIDS, PROPELLANT...
The current pressure sensitive paint (PSP) technique assumes a linear relationship (Stern-Volmer Equation) between intensity ratio (I(sub o)/I) and pressure ratio (P/P(sub o)) over a wide range of pressures (vacuum to ambient or higher). Although this may be valid for some PSPs, in most PSPs the relationship is nonlinear, particularly at low pressures (less than 0.2 psia when the oxygen level is low). This non-linearity can be attributed to variations in the oxygen quenching (de-activation)...
Topics: NASA Technical Reports Server (NTRS), PRESSURE RATIO, PAINTS, HIGH PRESSURE, TEMPERATURE EFFECTS,...
4
4.0
Jan 13, 2021
01/21
by
Benjamin Säll (3dBenjamin)
data
eye 4
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This is a repacement handle I made for my Kärcher K 6.85 because the original spool handle broke. It's a one piece print with a rotating outer piece and it's very comfortable. This handle can also be seen as an upgrade to the original one as it's more comfortable and stronger. Print with handle grip facing upwards(standing up)
Topics: Upgrade, thingiverse, K 6.85, High_pressure_washer, stl, Washer, Spool_handle, Kä, rcher,...
3
3.0
texts
eye 3
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Topics: manualzz, manuals, Rac RACHP133 manual, RACHP133 pdf download, RACHP133 Operating instructions, Rac...
